Only run java 20 tests on compatible vms

With the new gradle setup we now compile these with JavaVersion.VERSION_20

Bug: b/303205626
Change-Id: I05e6181d1aa356f36ad191404182d9ca2ed64583
diff --git a/src/test/java/com/android/tools/r8/desugar/jdk8272564/Jdk8272564Test.java b/src/test/java/com/android/tools/r8/desugar/jdk8272564/Jdk8272564Test.java
index c7d877e..ddd0285 100644
--- a/src/test/java/com/android/tools/r8/desugar/jdk8272564/Jdk8272564Test.java
+++ b/src/test/java/com/android/tools/r8/desugar/jdk8272564/Jdk8272564Test.java
@@ -27,10 +27,8 @@
 
   @Parameters(name = "{0}")
   public static TestParametersCollection data() {
-    // TODO(b/218293990): Right now the JDK 20 tests are built with -target 17, as our Gradle
-    //  version does not know of -target 20.
     return getTestParameters()
-        .withCfRuntimesStartingFromIncluding(CfVm.JDK17)
+        .withCfRuntimesStartingFromIncluding(CfVm.JDK20)
         .withDexRuntimes()
         .withAllApiLevelsAlsoForCf()
         .build();